2025-12-10T22:44:32.41Z37.759334564209-121.9428329467777.3899998664856manualconfirmedUSGS2.16md1Origin/20251210224700.817269.195260Magnitude/20251210224700.817319.195261USGS4 km SE of San Ramon, CAregion namenccatalognc75278021contributorID